Catalase is an enzyme that turns hydrogen peroxide into water and oxygen. A student fillsseven test tubes with equal amounts of catalase and 5 mL of hydrogen peroxide at differenttemperatures. The student records the number of bubbles produced in each test tube in agraph .What can the student correctly conclude from the graph?A. The structure and function of the enzyme remain intact at 60°C. B. The structure and function of the enzyme change at 30°C. C. The enzyme works best when the temperature is 40°C. D. The enzyme works best when the temperature is 0°C.6. The graphs show the rate of reaction vs. temperature and the rate of reaction vs. pHfor an enzyme. Which statement provides the correct interpretation of the graphs?

A. The enzyme works at a high level no matter how the temperature or pH changes.

B. The enzyme works best at a certain temperature and is not affected by changes in pH.
C. The enzyme works best at a certain pH and is not affected by changes in temperature.
D. The enzyme works at a high level within specific ranges of temperature and pH.

Match the descriptions / definitions with the term they best describe 1. three dimensional relationship of the different polypeptide chains in a multisubunit protein or protein complex 2. common folding pattern in proteins in which a linear sequence of amino acids folds into a right-handed coil stabilized by internal hydrogen-bonding between polypeptide backbone atoms. 3. the amino acid sequence of a protein 4. a region on the surface of a protein that can interact with another molecule through noncovalent bonding. 5. three-dimensional arrangement of alpha-helices and beta-sheets within a single polypeptide, typically stabilized by a variety of noncovalent bonds, including ionic and hydrogen bonds, and nonpolar interactions / hydrophobic force. 6. the chain of repeating carbon and nitrogen atoms, linked by peptide bonds, in a protein. 7. common structural motif in proteins in which different sections of the polypeptide chain run alongside each other and are joined together by hydrogen bonding between atoms of the polypeptide backbone. 8. portion of a polypeptide chain that has a discrete tertiary structure of its own and can often fold independently of the rest of the chain 9. regular local folding patterns in a protein, including alpha-helix and beta-sheet a. primary structure b. beta-sheet c. protein d. coiled-coil e. polypeptide backbone f. secondary structure g. side chain h. tertiary structure i. binding site j. alpha-helix k. quaternary structure l. protein domain

Some mining processes involve removal of large areas of earths surface in the mined region this practice causes severe environmental damage by allowing which natural process to accelerate in the affected areas? a.precipitation b.erosion c.migration d.condensation

Plz ! having a smooth seeds is the dominant trait. having wrinkled seeds is a recessive trait. the offspring of two plants with smooth seeds, a. must have smooth seeds. b. may have smooth or wrinkled seeds. c. must have wrinkled seeds. d. have a 25% change of having smooth seeds.